Flexible lock-joint for car bodies and trucks.



J. MoG. COLEMAN.

FLEXIBLE LOCK JOINT FOR CAR BODIES AND TRUCKS. APPLICATION FILED 11mm, 1913.

1,089,396. Patented Mar. 10, 1914.

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. J. M 0. COLEMAN. FLEXIBLE LOCK JOINT FOR OAR BODIES AND TRUCKS. APPLICATION FILED FEB. 6, 1913.

1,089,396. Patented Mar. 10, 1914.

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JAMES MCCUTCHEON COLEMAN, OF WES'IMOU'NT, QUEBEC, CANADA.

FLEXIBLE LOCK-JOINT FOR CAB BODIE AND TRUCKS.

.Epecification of Letters Patent.

Patented Mar. 10, 1914:.

Application filed February 6, 1913. Serial No. 746,555.

To aZZ whom it may concern Be it known that I, Jnnns McCU'rcnnoN COLEMAN, a citizen of the United States of America, and a resident in the city of Westmonnt, in the Province of Quebec, in the Dominion of Canada, have invented certain new and useful Improvements in Flexible Lock-Joints for Car Bodies and Trucks; and I do hereby declare that the following is a full, clear, and exact description of the same.

The invention relates to improvements in flexible lock joints for car bodies and trucks, as described in the present specification and illustrated in the accompanying drawings that form part of the same.

The invention consists essentially in the novel means employed for locking the truck to the body of the car without affecting the flexibility of the joint.

The objects of the invention are to save life and property in the event of collision of railroad cars, by effectively locking the body to the trucks, to devise a simple construction in such devices and generally to provide a simple and durable joint in the same class of safety appliances as set forth in United States Patent No. 1026945 dated the 21st May 1912.

In the drawings, Figure 1 is a vertical sectional View showing the body bolsterbearing on the truck bolster and the arrangement of the tying members and king pin. Fig. 2 is a detail View showing an end plan view of a tying member. Fig. 3 is an end plan view of the assembled tying members and king pin. Fig. 4 is an end plan View of the other tying member. Fig. 5 is a detail of one tying member in elevation broken away intermediate of its length. Fig. 6 is a detail of the other tying member in elevation, broken away intermediate of its length. Fig. 7 is a detail of the king pin in elevation, broken away intermediate of its length. Fig. 8 is a vertical sectional view showing the same arrangement as Fig. 1 but at right angles thereto. Fig. 9 is a cross sectional view on the line AB in Fig. 6.

Like numerals of reference indicate corresponding parts in each figure.

Referring to the drawings, 1 is the body bolster, which is secured to the underside of the car body as customary.

2 is a central vertical passage through the body bolster 1 and encircled by the wall 3,

\ said passage wall converging slightly at the lower end 4 and at the upper end 5, and forming at said upper end the annular flange 6 which also forms a bottom of the recess 7.

9 is the central bearing member securely riveted to the underside of the bolster 1 and having a central opening 10 therethrough in alinement with the passage 2, a central circular recess 11 and the convex surface 12 extending outwardly from the edge of said recess 11.

13 is the truck bolster having the recess 14: from the underside thereof, the circular boss 15 turning in the circular recess 11, a central opening 16 through said boss to the recess 14, formin g the annular flange 17, said opening 16 being in alinement with the passage 2 and the opening 10, and the concave surface 18, extending from the opening and meeting the convex surface 12, thus forming the bearing between the car body and truck.

19 are the tie or loo members each of said members being of arc-shape in cross section and at the top and bottom thereof having the outwardly extending flanges 20 and 21 respectively, said flanges 20 and 21 engaging the flanges 6 and 17 of the body and truck bolsters and said tie members 19 intermediate of their length engaging the upper con verging end 5, the lower converging end 4-, the central bearing member 9 and the boss 15.

22 is the king pin having the vertical ribs 23, one on each side thereof, said king pin being inserted in the central passage 2 between the tie members 19, and splitting said tie members, one from the other, by means of the vertical ribs 23.

The head 2 1 of the king pin is in the re cess 7, immediately above the flanges 20, which are also in said recess, thereby countersinking said flanges and head in the up per side of the body holster. The lower flanges 21 are in the recess 14: above the axle 25.

It will now be seen that the body and the truck are not only tied together, but effectively locked by means of the engagement of the flanges of the tie members with the flanges of the said bolsters, respectively, and the locking of said tie members in position by the said king pin, and yet both the king pin and the tie members are free to turn, as if they were of one piece only, thus materially adding to the flexibility of the joint, in fact this joint has all the advantages of the well known and simple king pin fastening with the increased advantages of the look, as Well as the reinforcing parts to the joint incidental to this invention.

lVhat I claim is L 1. In a flexible lock joint for car bodies and trucks, a body bolster, a truck bolster, tie members at one end engaging said body bolster and at the other end engaging said truck bolster and a king pin provided with means for carrying said tiemembers therewith in rotation, the latter being journaled in fixed bearings in the said body and truck bolsters.

2. In a flexible lock joint for car bodies and trucks, a body bolster, a truck bolster, tie members arc-shaped in cross section and having outwardly extending flanges at the upper and lower end thereof engaging said body and truck bolsters, respectively, and a king pin provided with means for carrying said tie-members therewith in rotation, the latter being journaled in fixed hearings in said body and truck bolsters.

3. In a flexible lock joint for car bodies and trucks, a body bolster having a central vertical passage therethrough and a central recess at the upper end of said passage forming at the bottom an annular flange, a truck bolster having a suitable bearing surface meeting said body bolster, a recess from the under side and a passage into said recess in alinement with the said passage in the body bolster, the bottom of said recess form ing a flange surrounding the passage, a plurality of tie members arc-shaped in cross section having flanges at the upper and lower ends engaging said annular flanges,

respectively and a lung pin having vertical ribs splitting said tie members from one another and rotatable with said tie members.

4. In a flexible lock joint for car bodies the upper side of the bolster, said bolster having a bearing member rigid with the underside thereof and a central opening through said bearing member in alinement with the lower converging end of the aforesaid passage, a truck bolster having a recess from the underside thereof, a bearing surface meeting the aforesaid bearing and an opening through the bottom of said recess, said recess bottom forming an annular flange surrounding said opening, a pair of tie members formed in cross section in arcshape and having flanges at the upper and lower ends engaging said bolster flanges, respectively, and abutting the converging parts of the passage walls and bearing memher in the truck bolster and a sing pin having vertical ribs separating said tie 1nem hers and forming with said tie members a rotatable joint member.

Signed at the city of Montreal, Province of Quebec, Canada, this 6th day of January 1913.

JAMES MGCUTCHEON COLEMAN.

Witnesses C. PATENAUDE, M. PATENAUDE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

